Effective Field Theory

Effective Field Theory

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Video Lectures from 8.851 Effective Field Theory, Spring 2013

Iain Stewart


    • Sep 30, 2013 LATEST EPISODE
    • infrequent NEW EPISODES
    • 1h 22m AVG DURATION
    • 26 EPISODES


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    Latest episodes from Effective Field Theory

    Lecture 15: Soft-Collinear Effective Theory (SCET) Introduction

    Play Episode Listen Later Sep 30, 2013 86:55


    In this lecture, the professor discussed degrees of freedom, light cone coordinates, SCETI & SCETII, jets and energetic hadrons, and collinear propagators.

    Lecture 26: SCET for LHC

    Play Episode Listen Later Sep 30, 2013 81:41


    In this lecture, the professor discussed Higgs pT distribution, Inclusive Drell-Yan, Threshold Drell-Yan, and Beam Thrust Drell-Yan.

    Lecture 25: SCET_2 Rapidity RGE

    Play Episode Listen Later Sep 30, 2013 83:02


    In this lecture, the professor discussed B->D pi example, rapidity divergences, massive sudakov form factor, and rapidity RGE.

    Lecture 23: SCET for Dijets

    Play Episode Listen Later Sep 30, 2013 85:34


    In this lecture, the professor discussed e+e- to dijets, factorize cross section with measurements, jet function, hemisphere soft function, peak/tail/fixed order regions, and all orders RGE.

    Lecture 24: SCETII

    Play Episode Listen Later Sep 30, 2013 78:08


    In this lecture, the professor discussed soft-collinear factorization, SCETI to SCETII matching, power counting theorems, and gamma* gamma -> pi^0 example.

    Lecture 21: SCET Sudakov Logarithms

    Play Episode Listen Later Sep 30, 2013 82:49


    In this lecture, the professor discussed LL RGE for Sudakov summation, cusp anomalous dimension, convolutions in RGE, and started DIS factorization.

    Lecture 22: SCET for DIS

    Play Episode Listen Later Sep 30, 2013 81:01


    In this lecture, the professor finished DIS factorization, 1-loop renormalization of PDFs, and convolutions in other processes.

    Lecture 20: SCET Wilson Coefficients

    Play Episode Listen Later Sep 30, 2013 87:13


    In this lecture, the professor discussed hard-collinear factorization, quark and gluon building blocks for operators, loops and IR divergences, and 0-bin.

    Lecture 19: SCET Beyond Tree Level 2

    Play Episode Listen Later Sep 30, 2013 82:42


    In this lecture, the professor discussed extension to multiple collinear directions, and ultrasoft-collinear factorization via field redefinitions.

    Lecture 18: SCET Beyond Tree Level

    Play Episode Listen Later Sep 30, 2013 81:46


    In this lecture, the professor discussed gauge symmetry, and reparameterization invariance.

    Lecture 17: SCET Multipole Expansion

    Play Episode Listen Later Sep 30, 2013 84:08


    In this lecture, the professor discussed multipole expansion with label and residual momenta, label operators, and Wilson line identities.

    Lecture 16: SCET Collinear Wilson Lines

    Play Episode Listen Later Sep 30, 2013 81:11


    In this lecture, the professor discussed W from integrating out offshell propagators, and SCET Lagrangian.

    Lecture 14: EFT with Fine Tuning Part 2

    Play Episode Listen Later Sep 30, 2013 83:47


    In this lecture, the professor discussed conformal invariance, SU(4) symmetry, calculations with the deuteron bound state, and started Soft-Collinear Effective theory (SCET).

    Lecture 13: EFT with Fine Tuning

    Play Episode Listen Later Sep 30, 2013 83:23


    In this lecture, the professor discussed 2-nucleon nonrelativisitic EFT, bubble sums & effective range expansion, fine tuning from RGE flow between fixed pts, and power corrections.

    Lecture 12: More Renormalons

    Play Episode Listen Later Sep 27, 2013 81:57


    In this lecture, the professor discussed solution of R-RGE, sum rule for renormalons, renormalons in OPEs, connecting Wilsonian and Continuum EFT.

    Lecture 11: Renormalons

    Play Episode Listen Later Sep 27, 2013 82:32


    In this lecture, the professor discussed bubble sum for heavy quark mass, removing renormalon ambiguities with scale R, R-RGE, and all orders formula for Lambda_QCD.

    Lecture 10: HQET Examples

    Play Episode Listen Later Sep 27, 2013 83:10


    In this lecture, the professor discussed heavy hadron masses, exclusive semileptonic decays, inclusive decays and OPE, pole mass versus short distance masses, and started topic of renormalons.

    Lecture 9: HQET Matching & Power Corrections

    Play Episode Listen Later Sep 27, 2013 80:22


    In this lecture, the professor discussed detailed matching calculation, velocity dependent anomalous dimension and Wilson coefficients, power corrections and reparameterization invariance.

    Lecture 8: Heavy Quark Effective Theory (HQET)

    Play Episode Listen Later Sep 27, 2013 79:14


    In this lecture, the professor discussed QCD to HQET, velocity labels, power counting, heavy quark symmetry, spectroscopy, covariant superfields, and started loops.

    Lecture 7: Chiral Loops

    Play Episode Listen Later Sep 27, 2013 86:27


    In this lecture, the professor discussed loops in ChPT in dimensional regularization, naive dimensional analysis, momentum power counting theorem, SU3, and started topic of Heavy Quark Effective Theory.

    Lecture 6: Chiral Lagrangians

    Play Episode Listen Later Sep 27, 2013 79:06


    In this lecture, the professor discussed linear sigma model & field redefinitions, non-linear Lagrangian & symmetry breaking, Spurion analysis, and started topic of loops.

    Lecture 5: Classic Operator Renormalization Group Equations (RGE)

    Play Episode Listen Later Sep 27, 2013 81:59


    In this lecture, the professor discussed renormalization group equations for Hw, running & scale variations, LL, NLL, etc., matching and scheme dependence.

    Lecture 4: Matching and Decoupling

    Play Episode Listen Later Sep 27, 2013 81:58


    In this lecture, the professor discussed alphas(mu) and integrating out massive particles in MSbar, and Electroweak Hamiltonian Hw.

    Lecture 3: Field Redefinitions

    Play Episode Listen Later Sep 27, 2013 84:40


    In this lecture, the professor finished field redefinitions, discussed loops, regularization and the impact on power counting.

    Lecture 2: Dimensional Power Counting

    Play Episode Listen Later Sep 27, 2013 85:18


    In this lecture, the professor discussed Marginal & (ir)relevant operators, Standard Model as and EFT, and started topic of field redefinitions.

    Lecture 1: Introduction to Effective Field Theory (EFT)

    Play Episode Listen Later Sep 27, 2013 79:39


    In this lecture, the professor discussed EFT of Hydrogen, top-down and bottom-up, and renormalizable EFT.

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